$login_url = 'http://passport.renren.com/PLogin.do'; 
 
$post_fields['email'] = 'XXXX'; 
$post_fields['password'] = 'XXXX'; 
$post_fields['origURL'] = 'http%3A%2F%2Fhome.renren.com%2FHome.do'; 
$post_fields['domain'] = 'renren.com'; 
//cookie文件存放在网站根目录的temp文件夹下 
$cookie_file = tempnam('./temp','cookie'); 
 
$ch = curl_init($login_url); 
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.1.5) Gecko/20091102 Firefox/3.5.5'); 
curl_setopt($ch, CURLOPT_HEADER, 0); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt($ch, CURLOPT_MAXREDIRS, 1); 
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1); 
curl_setopt($ch, CURLOPT_AUTOREFERER, 1); 
curl_setopt($ch, CURLOPT_POST, 1); 
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_fields); 
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_file); 
curl_exec($ch); 
curl_close($ch); 
 
//带上cookie文件，访问人人网首页 
$send_url='http://home.renren.com/Home.do'; 
$ch = curl_init($send_url); 
curl_setopt($ch, CURLOPT_HEADER, 0); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_file); 
$contents = curl_exec($ch); 
curl_close($ch); 
 
//清理cookie文件 
unlink($cookie_file); 
 
//输出人人网首页的内容 
print_r($contents);